//  BlockyFroggy
//  Copyright © 2017 John Ryland.
//  All rights reserved.
#pragma once
#ifndef BASE_GAME_STATE_H
#define BASE_GAME_STATE_H


#include <functional>


class GameGraphics;
namespace GameUi
{
  class DrawItems;
  class UpdateState;
} // namespace GameUi
enum TouchState { TouchUp, TouchDown, TouchMove };


class BaseGameState
{
public:
  BaseGameState() {}
  virtual ~BaseGameState() {}
  virtual const char* getName() const { return "BaseGameState"; }
  virtual void enter(GameGraphics&) {}
  virtual void exit(GameGraphics&) {}
  virtual void draw(GameGraphics&) {}
  virtual float getTime() { return 0.0f; }
  virtual void getPlayerPos(float pos[3]) { pos[0] = pos[1] = pos[2] = 0.0f; } // temp func - replace with getting camera
  virtual void getCameras(float cameraParams[8], float lightParams[8], float debugCameraParams[8], float /*a_elapsed*/) { for (int i = 0; i < 8; i++) { cameraParams[i] = lightParams[i] = debugCameraParams[i] = 0.0f; } }
  virtual bool update(GameUi::UpdateState& /*items*/, float /*elapsed*/) { return false; }
  //virtual void UpdateVariables(std::map<std::string,std::string>& /*variables*/) {}
  virtual bool touchesChanged(int /*x*/, int /*y*/, TouchState /*ts*/) { return false; }
  virtual void getScriptCallableFunctions(const struct luaL_Reg* &, int &count) { count = 0; }
};


#include "Common.h"


//! @todo return shared_ptr instead of raw pointer
typedef BaseGameState* (*GameStateFactory)();
using GameStateFactoryItem = GenericFactoryItem<GameStateFactory>;


// This can go in the header or cpp file, doesn't matter
#define REGISTER_GAME_STATE(gameStateName) \
  namespace details { \
    static BaseGameState* createGameState_##gameStateName() { return new gameStateName; } \
    GameStateFactoryItem g_register_##gameStateName(#gameStateName, createGameState_##gameStateName); \
  }


// For debugging
void ListGameStates();


#endif // BASE_GAME_STATE_H